169 (number)

169 is a natural number. It comes after 168 and before 170.

Mathematics

• 169 is a square number because it equals 13×13.
• 169 is the 13th square number (after 144 and before 196).
• It is also the sum of the first 13 odd numbers (1 + 3 + 5 + ... + 25 = 169).